A novel enhanced stability detection algorithm for ablation catheters: purpose and application in high-power...

Area of Science:

• Electrophysiology
• Medical Device Technology
• Cardiac Ablation

Background:

• Catheter stability assessment is critical during radiofrequency ablation procedures.
• Current end-expiration gated algorithms present limitations for high-power, short-duration (HPSD) ablation workflows.
• A novel algorithm, Stability+, has been developed for real-time catheter motion analysis.

Purpose of the Study:

• To evaluate the performance of the Stability+ algorithm in HPSD ablations.
• To compare Stability+ with the existing Gated algorithm.

Main Methods:

• Prospective data collection from left atrial ablations using Stability+.
• Retrospective analysis comparing Stability+ with the Gated algorithm.

Main Results:

• Stability+ detected 7.3% unstable applications during QMODE+ (HPSD) ablation.
• Average time-to-tag appearance was significantly faster with Stability+ (2.5s) versus Gated (9s).
• Stability+ prevented overshooting in 84% of QMODE ablation positions, with no adverse events.

Conclusions:

• The Stability+ algorithm enhances lesion tracking for HPSD workflows like QMODE+/QMODE.
• Stability+ shows potential to improve stability detection across all radiofrequency ablation modes.
• This represents a significant advancement in cardiac ablation technology.